3 Fix default concrete strength setting in new files. Fix calculations of development lerequirements greater than 100% in some

Changes in v6.3.5.0 - 08/08/2012 1 Fixed bug in calculation of minimum reinforcement for crack control when the tension reinforcement type is mesh. The maximum spacing limit was not being determined correctly in this case, overestimating the number of bars required. 2 Improved crack width calculations for AS3600-2009 for PT members to allo w variation only in bar diameter in controlling crack width. Bar spacing is auto matically set to 300mm and only bar diameter can control the design. 3 Added option for Eurocode 2 crack control provisions to give the designe r control over the crack width. Options are default (.3mm for RC sections and .2 mm for PT sections) or user selectable .2, .3 or .4mm crack width. 4 Added data checking for incomplete user materials data definition.

5 Added limitations to straight lengths in tendon profiles at the ends of cantilevers. This has never been allowed but was not blocked by the data checkin g. 6 Modified data checking for prestress cover and axis distance so that all spans are checked automatically. Previously, if an error was found in one span, no checking was done on spans to the right of that span until the offending pro files in that span were fixed. 7 Modified the axis distance limitation for prestressed tendons to nominat ed axis distance + 15mm (previously 10mm) in accordance with Eurocode 2 and a so on to be released amendment to AS3600. Changes in v6.3.4.0 - 26/06/2012 1 Fixed bug with depth of top reinforcement in reinforcement layout. 2 Fixed bug with tension force available for shear for designs to AS3600 p re 2009 and where the section is non ductile. Changes in v6.3.4.0 - 22/06/2012 1 Modified Concrete strength data so that it automatically sets an equival ent concrete strength when the Default Materials set is changed. 2 Modified default time of loading for Columns to 28 days.

3 Modified Creep maturity factor for AS3600 to the new equation in the com ing AS3600 amendment. 4 Made further improvements to the calculations for D offset requirements of codes to fix some problems and improve the logic in some areas. 5 Added calculation for the flexural reinforcement requirements for shear at the points of contraflexure for support moment contraflexure points. Previous ly this was only calculated for span moment calculation points.

6 Include the flexural reinforcement requirements for shear at the points of contraflexure in the graphics for Flexure - Ultimate - Reinforcement. If this occurs at a calculation point 9unlikely), the requirements are compared to the flexural design values and the controlling values reported. If the contraflexure points occur away from calculations points, extra p oints are included in the graphics with values for Total reinforcement and Shear reinforcement only. In a normal span there could be up to 4 contraflexure points. 7 Included flexural reinforcement requirements for shear at the points of contraflexure for support moments into the Reinforcement detailing to determine the final reinforcement layout. 8 Modified the logic for determination of minimum reinforcement requiremen ts for crack control to give the designer more control. The calculations will no w use the Minimum Bar Size for that design zone at the maximum spacing nominated in the Reinforcement Details screen. The designer can manipulate these items to control the minimum area of reinforcement as the only requirement is a spacing limitation for crack control. Also fixed some inconsistencioes in these calculations to ensure that the reinfo rcement added conforms to maximum spacing rules for crack control. 9 Added Canadian Standard A23-3 (not including special earthquake design r ules. These will be added later this year). Changes in v6.3.3.0 - 09/02/2012 1 Fixed problems with changing reinforcing types and carbon fibre. 2 Fixed problem in deflection calculations introduced in 6.3.2.0. Deflecti ons were being severely overestimated in some cases.

Changes in v6.3.2.0 - 20/12/2011 1 When the Bar Type in Reinforcement-General input is modified, any user d efined bars that are of the same type are modified to the new type and the close st equivalent bar size to the original is selected. The data in the User Defined reinforcement screen was not being modified to reflect this, though the changed data was used for design. This has been fixed. 2 In Slenderness calculations for columns, the modifications to clause 10. 3.1(a) in AS3600-2009 were missed in the 6.3.1.0 release. This has been rectifie d. 3 In the Slenderness calculations for columns, creep is very dependant on the time of loading. RAPT has always defaulted this to 10 days, the same as for floor slabs. This is not logical for columns. This did not have a large effect f or design to AS3600-2001, but the changes to the maturity Coefficient in AS36002009 have resulted in a large increase in the creep co-efficient for early loadi ng. The default has been changed to 28 days. The designer should adjust tjhis to an appropriate value for the column being designed. 4 Calculations for tension zone in column interaction diagrams modified to remove the "kink" that sometimes occurs in the interaction diagram in the direc t tension area. 5 Fixed intermittant crash in flat slabs with steps and drop panels.

6 Fixed inconsistency in deflection calculations for lightly stressed memb ers when shrinkage value are adjusted. This was related to the section propertie s used to determine the cracked condition of a section. Inconsistent velues were being used for the permanent load combination for short term and long term conc rete properties. 7 Modified Moment Redistribution to redistribute each individual pattern l ive load combination in the direction nominated. This results in the support mom ent only being reduced for positive redistribution until the positive moment rea ches the maximum level. Then positive moments are also redistributed if more red istribution than is required to achieve this is requested. This logic only works when the envelope of effects is from automatic patterning of the live load case. Redistribution for alternate live load cases, moving load cases and envelopes still redistributes the entire envelope. Changes in v6.3.1.0 - 2/10/2011 1 Added AS3600-2009 code changes. This includes major changes related to concrete properties (maximum concrete strength is increased to 1 00Mpa and a new compression block defined with special ductility requirements fo r high strength concretes, concrete modulus has been reduced significantly and m ean concrete strength defined and creep and shrinkage rules have been modified), Moment D offset flexure and shear design relating to the changes to the bending rule - all design codes development lengths crack control ductility rules capacity reduction factors plus many other changes

2 New concrete stress/strain curve based on Eurocode 2 curve used for all design codes to better model the lower ductility of high strength concrete. 3 New implementation of the Offset of the bending moment diagram rule for all design codes to better match the logic required for both RC and PT design. T he simply Moment Offset required in most codes does not apply to PT members and we have used the Required Tension Force logic of Eurocode 2 for all design codes . 4 5 Addition of Designer Comments to the output report. Full compatibility with Windows 7 interface changes

Changes in v6.2.2.2 - 2/11/2010 1 Added Maximum Shear Force to shear text output at each design location. 2 Added .5 * Vuc line to shear output graphics to show the standard code l imit for beams. 3 Added an option into Design Data Ultimate to allow the designer to chang e the critical shear design location from the Code Default to the Face of the Su pport. When this is selected, Shear Enhancement (2v/a) is not included. To inclu de Shear Enhancement at Supports, select that option in Design data Ultimate. It will automatically include the shift of the critical shear design location to t he face of the support. 4 The option to set concrete shear capacity, Vuc, to a reduced value in De sign Data - Earthquake had never been implemented. It has now been implemented a

fter discussions with the AS3600 code committee as to how it should work. 5 When beam shear is checked at the critical section at d from the column face (Shear Enhancement 2a/v not requested), RAPT previously has not checked max imum shear at the face of the support. This has been general industry practice e xcept for BS8110 based design codes. On discussion with concrete design acedemic s, we have now added a check for the maximum shear at the face of the support, e ven if the shear critical section is nominated at d from the face of the support . Checks on Vuc are still only made up to the nominated critical section. Changes in v6.2.2.1 - 07/10/2010 1 Fixed problems with vertical steps in top surface of slabs with Fielders metal Decking. 2 n). 3 Fixed problem with calculation of reinforcement layout (illegal operatio

Added functionality to Codemeter Dongles to allow sharing of RC and RC + PT licenses on one dongle.

4 ACI Clause 10.10.1, limit of 40 added to L/R limit for ACI code slendern ess calculations. 5 When Alternate LL cases are combined with a Patterned main LL case in a flat slab (two way action), the moment envelopes for the middle strip are ignori ng the Alternate LL cases. This has been fixed. Changes in v6.2.2.0 - 26/7/2010 1 Fix problem with section rotation for quadrants of circles. 2 Fix problem with Extend Radius when converting to trapeziums.

3 Fix problem with varying Prestress force values in tendons of the same t ype in prestressed columns. 4 code. Changes in v6.2.2.0 - 8/7/2010 1 Fixed Loads Input screen refresh when load definition changes 2 3 Fixed problem with development lengths for Mesh reinforcement to AS3600 Fixed problem with determination of top reinforcement in some cases with top reinforcement only at midspan. Fixed crash in Reinforcement Layout development calculations fort ACI318

4 Improved Reinforcement Layout for bottom reinforcement with reinforcemen t only required at span ens and not at the maximum moment area. Previously RAPT only considered extra bars at ends in cases where the extra reinforcement was on ly required outside the points of contraflexure, so only for ductility reinforce ment at supports. RAPT now looks for any increase in reinforcement outside the m iddle third of the span to determine if extra end bars should be considered. Changes in v6.2.1.9 - 18/5/2010 1 Added input data warning to check on minimum cover related to bar size. If the cover supplied is less than the bar diameter, RAPT will warn the user but allow the calculations to proceed based on the defined cover. 2 Related to 1 above, when calculating required bar size and the preferred

bar size does not work, RAPT will adjust the cover for larger bars if the large r bar reduces the cover to less than the bar diameter. 3 In cases where a section has ultimate capacity, but the tension reinforc ement is in the compression zone, there is no effective depth according to norma l design rules. In this case, RAPT adds minimum reinforcement at the tension fac e. This area of reinforcement is now based on the cracking moment of the section without PT, so as an RC member. 4 In Column Design for circular columns, added a switch to allow the desig ner to locate the position of the top bars in the column. 5 In Column Design, added a toolbar icon to acces Design Points directly, rather than through the Control Tree Structure. 6 Modified the opening of the Loads Input Screen so that the Panel Loads o ption is always the default load screen when the Load Cases screen is first crea ted. 7 In Column Design, the designer can now define any column rotation betwee n 0 and 360 degrees (the column is rotated clockwise) for the rotation of the co lumn about which the calculations are carried out. The pale green line on the ou tput graphics shows the axis about which bending occurs. This rotation defines t he angle of the neutral axis, not the direction of the moment resultant. In gene ral, it does not give a Biaxial column interaction diagram as a result. 8 Design routines for the inclusion of Metal Decking as a structural reinf orcing material have been added. For Australian materials specifications, the Me tal Decking must be Fielders decking. All Fielders Decking types have been added to the Australia Materials file. Designers should check with Fielders in each S tate to make sure that a specific sheet type and thickness is available in that StaTe. 9 Bug fixed in time dependent shrinkage calculations for Eurocode 2.

10 Fixed bug in load combinations when a load case is changed to earthquake or Wind from another type. Factors is non-earthquake and wind cases for the ear thquake and wind loads are now set to 0. Changes in V6.2.1.8 - 14/9/09 1 Fixed problem with crack control calculations to BS8110. One check was s till being done even if crack control checking was not requested. Some crack con trol reinforcement was being reported as Ultimate Strength Reinforcement as well . 2 3 Fixed reporting of servicability reinforcement to BS8110. In Input Dialog, added option for the definition of Initial Superimposed Dead Loads and Extra Superimposed Dead Loads.

4 In Input Dialog, added option for the definition of the fixity of the ba ses of the columns below, Pinned/Fixed. 5 Automatic Update available announcement now produces a temporary popup t ooltip at the bottom right corner of the screen. The check for availability of a n upgrade is done 1 minute after the RAPT session commences. 6 Modified Data Check for the length of the load pattern for Moving Load c ases where the load extent has been limited at one end only to allow load patter ns to extend past the end of the frame at the unlimited end. Actual moving load

6 Automatic Update available announcement is now a world symbol at the bot tom right of the status bar. We will try to make this more obvious in the furure with a temporary popup tooltip. Changes in V6.2.1.6 - 06/08/09 1 Fixed crash in shear design to ACI code when no extra reinforcement requ ired. 2 Modified Loads Data Checking to stop Other Load Cases to be defined as M oving Loads. Only LL and Alternate Live Load cases can be run as Moving Loads. 3 Fixed output of tendon profile values to printer for multiple profiles.

5 Fixed listing of number of bars in column output when a combination of b undled and single bars is used in a circular column. Changes in V6.2.1.4 - 27/02/09 1 Fixed problem with pattern loads to BS8110 if no loads are defined in th e Self Weight Load Case.

2 Fixed problems with determination of bar development where 2 bars meet a t midpsan. 3 Fixed problems with pretensioned wire in design.

4 Fixed problems where RAPT results give no reinforceemnt at the tension f ace while the shear design has a moment at that face. 5 Added option to create a DXF file for the prestress profiles. Right Clic k in the Input Prestress Graphics view to select the option to create a DXF file . A doalog will be presented allowing the definition of the format required. 6 Added design option for carbon Fibre strips as reinforcement. This optio n allows the designer to define the load condition at which the strips are attac hed. Carbon Fibre is added as User defined Reinforcement. properties can be defi ned in the materials data. 7 tion. 8 9 10 Added output option for calculations at the Permanent Service Load condi

In material data, added automatic recalculation of Concrete Modulus when the concrete density is modified. Fix problem with minimum reinforcement for one way slabs to TR43. Fix problem with selection of Alternate LL cases in some cases.

11 Fixed problem with end termination of bars to BS8110 and variants of thi s code. 12. If a calculated bar requires development, RAPT will define the exact % o f development required and report this in the output. Normally in detailing, a d esigner would then provide this as either 50% or 100% developemnt using either a standard bend, special bend or a lap splice. When this reinforcement is inserted into the design as User defined rein forcement, RAPT will still nominate the calculated % of development unless it is less than 10%. If less than 10%, RAPT will round it up to 10%. If less than 10% development is specified for a bar, RAPT assumes that there is no development a t that end of that bar in the calculations. 13 Fix problem with updating of reinforcement cover when user defined bar l ocations modified. Changes in V6.2.1.3 - 01/08/08 1 Fixed problem with backup file naming when multiple sessions of RAPT are run on the same computer. 2 Fixed problems with detailing of reinforcement from some complicated rei nforcement arrangements. Detailing of reinforcement has been improved in some ar eas, especially where compression reinforcement is needed, resulting in shorter bars being defined in some cases by RAPT. 3 Improved routines for determining plastic hinge locations, especially in zones where there is a change in section.

4 Added logic for repositioning of point loads and point moments on cantil evers when the cantilever length changes. Now, If the point load is at the free end of the cantilever, it will remain at the free end no matter what changes are made to the cantilever length. If the cantilever length increases, the distance to the point lo

ad from the free edge will be maintained. If the cantilever length reduces, the length to the point load f rom the support end will be maintained until the load reaches the end of the can tilever at which time it will remain at the end of the cantilever as the cantile ver is shortened further. For loads with a length, if the cantilever length reduces to a p oint where the point load length is longer than the cantilever, the length will be reduced to zero and the load placed at the end of the cantilever. 5 An option to check for RAPT Updates has been added. This can be controll ed by the user from the View->User Preferences Dialog. An extra Tab page has bee n added giving the user the option to nominate for Automatic Check - This will be done whenever a new RAPT session is launched. Manual check by clicking on the button. In either case, RAPT will then offer a button to allow for an update to be downl oaded if the version on our website is newer than the current version being used . 6 Fixed problem with multiple Area Loads in moving load cases.

7 Fixed problem with loads that start or end within .5mm of a support and not exactly at the support. 8 Fixed problems with effective depth for drop caps in punching shear.

9 Added check on building type for patterning of live loads for permanent load combination for deflections. When storage building is selected, this is aut omatically turned on now. 10 Added data check to ensure that all load cases are included in at least one load combination. 11 Added data check to ensure that each load case has a non-zero moment val ue at at least one location. 12 Modified warnings for ductility for cantilevers and setting of maximum c ompression reinforcement at ends of cantilevers. 13 Fix problem with punching shear calculations for external panels at the drop face. 14 Add ACI 318 - 2005 changes.

15 Add warnings for serviceability limits for two way average prestress des ign based on ACI code or TR43 version 1 and version 2, whichever is applicable. 16 ends. Fix treatment of cover for user defined reinforcing bars with staggered

Changes in V6.2.1.2 - 25/4/08 1 Fix development length calculations for Indian Code 2 3 4 Fix covers to bars in output reinforcement layout at changes in concrete section. Rounding of bar ends no longer done at these locations. Fix user defined reinforcement definition for concrete faces with steps. Fix Pattern Load resetting when spans deleted/added and the total number of spans changed to or from 1.

5 Fix incorrect reporting of the prestress moment at the right end of the span in the Secondary Forces Report. 6 Fix treatment of cover for user defined Mesh reinforcement.

Changes in V6.2.1.1 - 8/3/08 1 Fix display of user defined reinforcement in output reinforcement layout graphics. 2 Fix bug in calculation of shrinkage and temperature reinforcement where user defined reinforcement is created from program calculated reinforcement. This reinforcement was being ignored in the calculation of the shrinkage and tem perature reinforcement in some cases. 3 put. Fix shading of some complicated column shapes in interaction diagram out

Changes in V6.2.1.0 - 13/2/08 1 Fixed bug with depths to user defined reinforcement where there is a ste p in the concrete surface that the cover is being measured from. Remember, in de fining user defined reinforcing bars, the controlling depths to the reinforcemen t are the covers at the extreme ends of the bars. 2 Fixed bug in moving load analysis where the load spacing is very small.

Changes in V6.2.0.9 - 23/11/07 1 Add extra toolbar icon in Bending Moment/Shear reports to allow each ind ividual Moment/Shear diagram to be drawn at it's own scale rather than at the sc ale of the controlling diagrams. For slabs with column/middle strip results, bot h strips are drawn to the same scale for the diagrams in view. 2 Modified reinforcement Depth to reinforcement cover. This applies to - design zones, where the cover is measured to the surface of th e preferred bar size from the relevant input face, and - user defined reinforcement, where the cover is measured to the surface of the defined bar from the relevant input face. For beams, the cover is to the main bar, not the ties. RAPT will give a warning if the calculated bar size is not equal to the preferred bar size in the final results. If the calculated bar size is greater than the preferred bar size, RAPT will automatically adjust the reinforcement area required in calculating the fin al Reinforcement Layout to allow for an increased area of reinforcement based on maintaining the same cover to the larger bar, thus reducing the effective depth . The area of reinforcement is adjusted by the ratio of the effective depths. 3 When the reinforcement cover is modified in the General Screen, any bar with the same cover will now be changed to the new cover. Previously only the co vers for design zones were modified. 4 Fixed bug which resulted in and endless loop in the calculations and a r esulting Windows Out of Memory error. The problem was caused by a comparison of numbers and the old float rounding error in computers in the calculation of some complex section shapes. 5 Modified the reprofiling of tendons when the tendon size is changed. Now - if the tendon is profiled to cover to a surface RAPT will reprofile to

maintain cover at that face for the new tendon size - if the tendon is going to violate cover at a surface, RAPT will reprof ile to maintain cover at that face for the new tendon size - otherwise will leave the centroid of the strand at the same height, ad justing the underside of duct height to maintain this centroid height. 6 Fixed problem with point loads with a length defined where the frame len gth is modified and the defined location of the point load is still on the frame but the end of the point load is off the frame. The following now occurs If the point load defined location is passed the end of the fram e, the point load is deleted as previously Otherwise, the load length is shortened so that the full length of the load remains on the frame. The full point load is then applied over a sho rter length. Changes in V6.2.0.8 - 23/10/07 1 Fixed shear error calculation for members with circular voids. 2 Fixed calculations for case where a point load with a length is applied completely within the Right End of a frame. 3 Added warning if Left End or Right End dimension is large, questioning w hether it should be called a cantilever. The warning is given if the distance to the edge past the column face is greater than .1 of the back span. 4 Modified the calculation method for moving loads to give a better envelo pe of the effects for cases where there are relatively large gaps between the lo ads on relatively short spans. The default number of spaces per span has been in creased to 20. 5 Fixed the calculation for fixed load patterns in moving load cases when the Live Load case is defined as a moving load case. 6 Added an option in moving load cases to limit the length of the frame ov er which the moving load pattern is to be applied. The designer can define limit s at the left and right ends of the member. 7 Modified bar size selection method if the preferred bar size does not su it the required spacing. RAPT will now select - for beams - the nearest bar size larger than the preferred bar size th at suits the spacings. If no larger bar sizes suit, then the nearest bar size sm aller than the preferred bar size that suits the spacings. - for slabs - the nearest bar size smaller than the preferred bar size t hat suits the spacings. If no smaller bar sizes suit, then the nearest bar size larger than the preferred bar size that suits the spacings. 8 Fixed strip width calculations and tendon profiling in middle strips for members where a right cantilever is added.

9 Fixed problems with adjustment of the ends of loads etc where the LE/RE dimension has been set to a negative value and then a cantilever is defined, an end span added or the LE/RE dimension is changed to a positive value. Changes in V6.2.0.7 - 30/8/07 1 For old column files, fixed input to convert the concrete data to the ne w format. This was already happening for old frame files in the last release but had been missed for column files. 2 Modified reinforcing bar number calculations for the situation where the

preferred bar size and the code maximum bar size are both the smallest bar size available. Previously RAPT was still applying the maximum bar spacing limit fro m AS3600 and Eurocode 2 for these 2 cases when the bar size condition was the on ly one necessary. This often resulted in a warning about the bar size selected. 3 In Point Load input dialog (not moving loads) fixed data check to allow a load length of 0. 4 In Point Loads (not moving loads), fixed deleting of loads with a length > 0. Previously the loads were deleting from the data grid but were remembered internally and still applied to the load case for analysis. 5 Problem (crash when bars selected) with line reinforcement in Column Des ign fixed. 6 In the latest version thout load lengths, there are a length is defined before a ignored. This has been fixed if a mixture of point loads is defined with and wi some cases where loads are ignored. If a load with load with no length the load with no length may be in this release.

Changes in V6.2.0.6 - 31/7/07 1 Added Moving Loads as an option for loading. The load case used must hav e a Load Type of either Live Load or Alternate Live Load. It cannot be the case selected as the Live Load Case For deflections as it produces an envelope of mom ents. Moving Load is then a 4th option for the Load Definition. Once this is sel ected, the tab options available in the lower loads window will then allow the d efinition of a moving load pattern combined with a fixed load pattern. The movin g load pattern is positioned at the left end of the frame and will be moved auto matically along the member to produce the worst possible moment controlled and s hear controlled envelopes using the requirements defined in the "Details" tab to control the movement. 2 The concrete properties have been modified to allow the definition of di fferent Concrete Modulii for service and ultimate strength conditions. This was handled internally previously by RAPT in cases where it was necessary. The optio n for the definition of a peak strain point has been removed. The peak strain po int is now calculated internally as the point at which a parabola, whose propert ies are determined by the relative Concrete Modulus, reaches zero slope. For exi sting runs, RAPT will automatically update the materials file with the new data. If, during installation, a user decides not to update the materials defaults fil es from the installation program, the files will have to be manually updated by opening the relevant materials file and using the Recalculate Icon in the toolba r for the Concrete Properties to update the concrete data. Warnings will be give n if a run is created with incorrect data. For existing runs, RAPT will automatically update the concrete data when the fil e is reopened. 3 Added final Hong Kong CP2004 code amendments.

4 Updated the Help file and the manual PDF file to include the changes to the data above. 5 Fixed shear problem associated with partial loading for shear. If the sh ear results produced a shear design requirement with a moment on a member face w here there was no ultimate design moment, No reinforcement was supplied at the t ension face for this case so shear normally failed. RAPT will now design for the ultimate design moment for the shear case at that tension face to ensure reinfo rcement is supplied and make the shear results more logical. 6 Added Windows Vista support. For Windows Vista, the older versions of RA

PT will not run. Both new drivers and the latest version of RAPT are required. Changes in V6.2.0.5 1. Added check for the curvature of the main parabolic curve for double par abola type curves in the end span of a tendon where there is no reverse curve re quested. Previously no check was done in this case. 2. Fixed delete of reinforcing bars in Column Design Input. Previously, whe n 2 reinforcing types were selected in the data window at the top right of the s creen, selecting one of the reinforcing types and pressing the delete key result ed in both reinforcing types being deleted. 3. 4. 5 Added Column Grid References to output tables of column actions. Fixed crash in latest version when steps screen accessed.

Modified critical section locations for shear calculations when the code critical section at each end of a span will overlap (deep beams). RAPT will now calculate shear between the critical flexural sections in this case.

6. Fixed problem with Auto Backup (and changed name to Backup rather than a utosave as the backup goes into a different file with a name filename.~rpf and d oes not over-write the main data file). 7. RAPT now has an option for adding reinforcement for minimum reinforcemen t according to TR43 rules for slabs. These rules will be based on TR43 Version 1 for all codes except Eurocode 2 for which they will be based on TR43 Version 2. These rules would normally be used for Eurocode 2 (UK) and BS8110 and codes der ived from BS8110. They are not set as the default setting for these codes as TR4 3 is not actually part of any code nor is it directly referred to by any design code. A designer may set the Code Defaults option for this to TR43 if desired or may c hange it to TR43 from Default in Design Data for a particular run. 8. Modified default reinforcement layout calculations so that - default bar size for beams is the preferred bar size - default bar size for slabs is the smaller of the preferred bar size an d the calculated maximum bar size - if the solution above does not work RAPT will then select - for beams the largest bar size that works within the spacing l imits - for slabs the smallest bar size that works within the spacing limits 9. Added checks for basic shrinkage strain values for different codes and c alculation methods. Some calculation methods calculate the basic shrinkage by a formula so RAPT does not have a predefined value in the Materials data for those . 10. Added Hong Kong CP2004 code amendments.

Changes in V6.2.0.4 - 15/3/2007 1. Fixed problem with transfer beams at first internal column with cantilev er at the column, cantilevers without back spans and modified slab thickness in cantilevers. These problems were introduced in V6.2.0.4. 2. Fixed problem with report generation for strands stopping along the leng th of the tendon causing a crash.

3. Added a check on the defined shrinkage for the concrete for all codes ex cept Eurocode 2. For Eurocode 2, the shrinkage is calculated internally by RAPT using the code fo rmulae. Therefore the shrinkage in the European Materials in RAPT is set to 0. I f this materials set is used with any other design code in RAPT, the designer ne eds to define a shrinkage strain or change the prestress losses basis in design Data->Crack Control to Eurocode 2 so that the Eurocode 2 formulae are used for a ll shrinkage and creep calculations. Any defined value of concrete shrinkage is ignored when Eurocode 2 calculation methods are requested. For all other codes, the basic shrinkage strain (test value) must be defined. RA PT will give a warning if the value is less than 300 micro-strain and an error i f it is less than 50 micro-strain. Reasonable values for this would normally be in the range of 600 to 1500 micro-strain depending on the materials used in maki ng the concrete and the mix design. Values less than 450 are hard to achieve eve n with the latest admixtures and the best aggregates and mix design. 4. Fixed Design comment for transfer stress limit. The limit value was repo rting incorrectly in the design comment. The correct value was used in the calcu lations. 5 When checking ductility RAPT will check the value of effective depth fir st. If it is relatively small (less than .3D) RAPT attempts to put in tension re inforcement to achieve a ductile section by increasing the effective depth. Some times this has resulted in large areas of tension reinforcement to save a small area of compression reinforcement. RAPT now limits this area of reinforcement to the area that would be required for ultimate strength at that face ignoring the tendons that are causing the low effective depth. If a greater area would be ne eded, RAPT will revert to a standard double reinforcing design at that cross-sec tion. 6 In the Flexural design - Ultimate - Graphics output view, we have added points on the graph showing the sections RAPT considers to be the Critical Plast ic Hinge locations and the final depth of neutral axis ratio at these points. 7 When the total number of spans, including cantilevers is 1, pattern load is now turned off automatically.

Changes in V6.2.0.4 - 17/1/2007 1. Fixed problems with the automatic deleting ~backup files when a run is c losed or directories change. The user will now be asked if they want to reload a backup file rather than it being loaded automatically if it exists in all cases , instead of only when there are multiple backup files available as previously w as the case. The option is also available to delete the backup file. 2. Added more pattern loading options. Pattern Loading will always be turne d on by default. In the General Screen, the user can turn off Pattern Loading wi th a Y/N option. This will turn off all pattern loading options described below. As well as patterning live load for ultimate strength and crack control design, RAPT will now create odd spans loaded and even spans loaded pattern deflection cases. A "Pattern Live Load " data screen has been added under Design data to al low the designer to select which pattern load options to use in a design. In it the designer can choose the following Pattern Live Load factor #.## Pattern Live Loads for Ultimate Limit State Design Y/N Pattern Live Loads for Crack Control Design Y/N Pattern Live Loads for Deflection Design Y/N Pattern Live Loads for Permanent Deflection Load Case Y/N For normal buildings where the live load pattern is completely random, patternin

g of the live loads should be required for the short-term load effects on deflec tion but not for the permanent load effects. This is the default setting in RAPT . For cases where there is a known pattern of live load on alternate spans as ma y happen in some storage situations, libraries etc, patterning of permanent live load may be logical. It is up to the designer to decide on this requirement. 3. s. Fixed problem with copy/pasting of self weight loads for panel load case

4. Fixed problem with determination of flexural critical section location w here transverse beams are present in slabs for BS8110 and derivative codes. The transverse beam was being ignored if it extended past the column face. 5. Modified routines allowing for the effect of sloping soffits on low poin t tendon profiling to only allow for slopes in the area of the low point in a sp an. It should be noted that where a sloping or stepped soffit occurs in a span, RAPT will not always be able to profile exactly to the minimum cover specified. In some cases the designer may have to override RAPT's calculated low points to increase or reduce the cover supplied. If an increase in cover is required, RAPT will give a warning when output calculations are asked for or when the designer requests a data check. 6. Added partial patterning of live loads for ultimate shear strength analy sis. The live load shear at a section will vary depending on how much of the liv e loads is actually applied at one time. The maximum shear at a point could be c aused by only part of a UDL being applied or by one of a group of point loads be ing applied depending on the position of the loads applied and the cross-section in question. This check is required by AS3600 which requires a default criterio n setting the minimum live load shear to 25% of the maximum live load shear in t hat span (zero is not allowed at the maximum positive moment point) and is logic ally required in all design codes to satisfy the true conditions that occur with loadings in buildings and bridges. RAPT now automatically analyses for partial application of live loads for ultimate shear. Point loads are assumed to be appl ied individually and UDL's are applied for various lengths of each span in order to calculate an envelope of live load shears for combination with the other loa d cases. The nominal AS3600 figure of 25% is not used in RAPT. This is done auto matically for all Live Load and Alternate Live Load cases in RAPT. 7. dule. Fixed problems with multistrand prestressing tendons in Column design mo

4 Added AutoBackup option. This can be turned on in View - User Preference s - User Options. Tick the box and set a time interval. A copy of the file will be created using filename.~###. When RAPT is closed or the file is closed normal ly, the backup file will be deleted automatically so that the only backup files on your computer when RAPT is not running should be the one that exists if there is an illegal operation and RAPT closes down prematurely. When RAPT is restarte d, the user will immediately be prompted with a dialog asking if RAPT should ope n the backup file if one exists. 5 Fixed problem with adjusting drop panel lengths when span length changes

6 Fixed problem with Formatting of Beam Shear Info Dialog in cases where m aximum Shear value never shows on the shear graphics. 7 Fixed problem with resetting of prestress drape lengths when LE and RE l engths are modified using Alt Repeat. 8 Fixed problem with the calculation of the Exposed perimeter for Theoreti cal Thickness calculations in cases where voids are placed in the edge of the co ncrete. 9 Fixed operation of horizontal steps for "Step Sides of a Layer" - Step In/Out option fixed. "Step Corners of Layers" - Sides option removed and Step In/Out option fixed. 10 Grid reference logic revised for cases where the user has not modified t he grid references and spans at the left end are deleted. In this situation wher e the grid references and Column numbers are equal and start at 1, the modified values will always reset to start at 1 when left end spans are deleted. 11 Fixed incorrect resetting of Column/Middle strip in reinforcement data o n undo. previously, the middle strip data could be showing while the header said column strip after an undo. Changes in V6.2.0.2 - 30/9/2006 1 Modified Tension Stiffening calculations by Modified Concrete Tensile Mo dulus method to reflect the changes suggested in Technical Note 372 and Technica l Report TR59. Instead of a constant amount of tension stiffening, the amount of stiffening provided is now related to the concrete strength and the tensile str ain in the extreme tension face of the member. This results in reduced deflectio ns at the onset of cracking. 2 Modified the prestress tendon profile graphics to only show tendon profi les that have a number of tendons or a tendon spacing defined. Previously the pr ofile shape showed on the graphics even if there were no tendons defined for tha t profile. 3 Modified BS8110 crack width calculations to add extra reinforcement for crack control if the requested level of crack control cannot be provided with th e reinforcement required for ultimate strength. Previously in this case RAPT rep orted a negative maximum reinforcement spacing. This will still not guarantee th at a reinforcing bar number/size solution can be found for this design. Once the next AS3600 release is finalised later this year, the same approach to crack control calculations will be offered for AS3600 and Eurocode 2 where the d esigner will be able to nominate a crack width limit and RAPT will nominate maxi mum bar size and spacing requirements for that crack width. 4 5 Fixed problem with rounding of the end location of reinforcing bars. Fixed problems with copy/paste of elements.

6 Add Indian Concrete Codes IS 456 and IS 1343 as code design options and I ndian materials data. Changes in V6.2.0.1 - 16/8/2006 1 Fixed problems with saving mesh data for columns

2 Added edit view field on task bar. When editing data in RAPT the data be ing edited and the current cursor position in the data is shown at the bottom le ft of the task bar. This is useful when the data string being edited is longer t han the current data cell size as the full data string is shown on the task bar while only an abbreviated length of the data string is shown in the data cell un til the edit operation is completed. 3 Added distances to left and right column from the current cursor positio n in the task bar for main graphics view. When a point is selected with the curs or in the graphics view, the location from the left end of the frame is shown in the edit cell in the toolbar. At the same time, the distances to the support li nes to the left and right of the selected point are now shown at the left end of the task bar. 4 Modified the prestress calculations to allow the designer to define a ze ro prestressing force. This allows the checking of a design where the tendons ha ve not been stressed for some reason. If the tendons have not been grouted, the unbonded prestress option should also be selected. 5 Modified the loading type information in the materials data to include a ssembly (crowd) loads, heavy vehicle parking, wind and snow loads. Default Combi nation factors can now be defined for these load types. 6 Default load combinations have been modified to include the effects of t he changes in 5 above as well as the latest versions of ACI318 and Eurocode 2. A s no other codes currently define the serviceability load combinations we have c reated default cases based on the logic in Eurocode 2 (this is the proposed meth od in the new AS3600 also). Default combinations have also now been included for snow loads. 7 Added routines to round off the length of program calculated reinforcing bars. Bar extents are rounded to the next nearest 50mm or 2" and allow for bars meeting at a point with the rounding done towards the bar type which has the sm aller total area of bar. 8 Fixed program crash when cell repeat function is used where there is a D ata list in the cell in the next row. This happened in drop panels as well as so me other screens. 9 Fixed apparent program crash when defining some element shapes. RAPT was going into an infinite loop if the element shape exactly matched the dimensions of an existing shape such as a down turned beam. Fixed all other reported interface bugs.

10

11 Fixed problems with shear design to Eurocode 2. Note the shear design me thod in RAPT for Eurocode 2 is from an old version of the code. We are currently revising this and hope to have the new version in the next RAPT update. The cha nges are significant and the effects wide ranging with concrete shear capacity n ow being ignored once the applied shear is greater than the concrete capacity in the new version of the code. 12 Fixed some inconsistencies in reinforcement detailing. Also fixed error (over-estimate) in the calculation of the development length of bars in the deta iling section (not in design calculations) in some concrete configurations. 13 Modified logic in prestress input to automatically update the tendon pro files to maintain the same cover when tendon size or prestress type is modified. 14 Added extra calculation points in negative moment regions to better defi

ne the steep moment gradient in this area and improve bar termination calculatio ns. 15 Modified method of determining low point profile heights for skewed para bolic profiles to better estimate the effect of the skew in the internal iterati ons to determine the required mid parabola length centreline profile heights to achieve nominated covers. 16 Modified resetting of reverse curve radii when tendon types and sizes ch ange to revert back to the default radius if the previous radius was equal to th e previous minimum radius and the new minimum radius is less than the default ra dius. Previously, the radius only changed when the new minimum radius was larger than the current radius. 17 Added lateral Distribution Factors to output report for 2way frames.

Changes in V6.1.2.8 - 17/5/2006 1 Fixed problems with Column Grid References. Previously, when adding or d eleting spans the grip references were sometimes incorrectly renamed when trying to fit to a pattern. This could then cause items whose locations were reference d from that column to move if multiple columns ended up with the same grid Refer ence name. 2 Add Hong Code CP2004 as a new design code option. This is being released as a Beta version for this code while 3rd party checks are carried out.

3 Added an option for complex effective flange width for beams. The comple x version uses the Eurocode 2/Hong Kong CP2004 logic of different effective flan ge widths in the negative and positive moment areas by default. 4 Added CEP-FIP 1970 and CEB-FIP-1978 creep and shrinkage calculation meth ods as options. 5 Fix problem with calculation of development lengths for bottom reinforci ng bars. The development lengths will now be shorter. 6 Added extra functionality for creating complex column shapes. The main o ptions allows the designer to a) define any shape or group of shapes eg a circle, and then make a cut through the shape to leave only the part of the shape on one side of the cu t. b) convert circular shapes to multiple trapeziums c) delete void shapes but leave associated reinforcement (individua l bars only) in the remaining shapes (allows circular reinforcement patterns to be defined in any shaped column). 7. Add data checks for live load reduction factors to stop the definition o f illogical values. Changes in V6.1.2.7 - 20/01/06 1 Fix problem with warning about illegally dimensioned layers Changes in V6.1.2.6 - 22/12/05 1 Fix problem with Info dialog . 2 3 Added context sensitive (?) help to dialogs. Added option to view concrete shape, plan or elevation, on loads graphic

s. 4 Fixed problem with generation of section shapes where column/middle stri p line crosses drop panel sides. Changes in V6.1.2.6 - 16/12/05 1 Added Column Grid Reference in the columns data screen. RAPT allows the designer to define the grid reference number of any support points to allow the designer to match the grid numbers in RAPT to those on the drawings for the memb er/panel being designed. This is a text field and the length of the text string is limited to 256 characters. RAPT will only use the first 3 characters in the g raphics and text output. The Column Grid Reference will default to the column/su pport number e.g. 1, 2, 3, 4, 5 for a 4 span frame. 2 Moved Column Shortening from the General Data screen to the Column Data screen with an option to set it individually for each column. 3 Added Special Copy/Paste options to Loads, Reinforcement and Elements to allow the designer to copy and paste multiple complete rows (sets) of data auto matically. This avoids the problems encountered with hidden columns and the data verification and data resetting problems that often occur when the data is copi ed using the standard Windows Copy/Paste functions in the General Toolbar. The n ew Copy/Paste functions are in the Special toolbar for each window. The General Toolbar options are still available for Windows Copy/Paste functionality. 4 Modified the Cursor shape in the Frame views to show the viewing directi on for sections etc. 5 6 7 The help screens and manual have been brought up to date for the changes made to the Frame design options over the last 12 months. Fixed problems with conversion of DOS files. Fixed problem with installation for BS8110 design code.

Changes in V6.1.2.5 - 21/11/2005 1 Fixed calculation problem in column Slenderness calculations introduced in version 6.1.2.1 2 When editing a data cell and a red errorcell appears, Esc now undoes the edit and returns the previous value in the data cell.

3 Fixed inconsistency in the graphics for service stresses around the poin t of contraflexure. Changes in V6.1.2.4 1 Fixed intermittent problem with continuous graphics regeneration in some background screens giving the appearance of an endless calculation loop. 2 Fixed problems with calculation of surface levels and section properties for some complicated shapes involving voids.

3 Fixed problems with adding horizontal steps and rebates in two way beam systems. 4 5 Added Zoom to column interaction diagram output. Added option to plot point on curve of interaction diagram based on a us

er defined Axial Force. 6 Added extra options for the display of design points on interaction diag rams. Labels have been added and the points shown can be grouped according to ma tching labels. Changes in V6.1.2.3 - 5/10/2005 1 ACI 318 Capacity Reduction factor for Shear is incorrect in the design c ode file for ACI. The load combination factors had been changed to agree with th e latest version of ACI318 but the capacity reduction factor had not been modifi ed to suit. This does not affect the default files for other design codes based on ACI as these have not been modified to the new ACI318 values. 2 Calculation problems with the combination of elements and layers in the last version which caused endless calculation loops and some incorrect surface l evels have been fixed. 3 Added Toolbar option in Frame graphics to draw plan and elevation views at consistent vertical/horizontal scale. The default is still to plot to fit the available space. Changes in V6.1.2.2 1 The default treatment of Design Service Levels in the general Screen of Frame input has been modified. If will now default to "Extreme Surface" for new runs. This will remain as the default setting for normal slab and beam systems. If an element is added, RAPT will automatically change the Design Service Level to Program Default in anticipation that an added element might require a differe nt level be selected. The designer can then change it back if desired. After the first element is added, RAPT will accept the setting selected by the user and w ill not modify it further if more elements are added. 2 In previous versions of RAPT, adding multiple void elements to a concret e face to change the extreme fibre depth caused unrecoverable calculation proble ms. This has been fixed in this version. Changes in V6.1.2.1 - 12/8/2005 1 Modified service stress calculations for the uncracked section checks. T he transformed section properties are now used instead of the gross section prop erties. This will reduce the stresses and make the relationship between the crac ked and uncracked stresses more consistent as the cracked stresses have always b een based on the transformed section. 2 In Steps Input, the dialogs for adding steps have been completely redesi gned with a graphical layout to show the options more clearly. The manual has no t been updated for this yet. 3 Multiple copies of RAPT can be run on a computer now. On network dongles , each copy of RAPT running will be logged in as a separate login. 4 5 Bug in pattern loading for runs with left cantilevers has been fixed. Bug in the combination of user defined moment envelopes has been fixed.

6 Problem with rigid steps in the punching shear zone for BS8110 and CP65 runs has been fixed. 7 Incorrect punching perimeter for external panels fixed.

10 Added Toolbar option in Frame graphics to draw plan and elevation views at consistent vertical/horizontal scale. The default is still to plot to fit the available space. 11 Added an extra column of data in the Prestress Drape Locations View to d efine the number of continuous strands in each tendon in each span. The number o f strands present at each anchorage is also now nominated beside the anchorages on the graphics. 12 Plus many small changes and improvements to prestress tendon reprofiling , tendon profile calculations and other functionality. 13 Cross-section design is nearly completed and will be coming soon.

Changes in V6.1.1.9 - 27/6/2005 1 The methodology used for selecting cells for editing has been changed to more closely resemble the Excel logic. A single left mouse click will select th e data cell in Overtype mode. A double left mouse click will select the data cel l in Edit mode if the click is within the length of the text in the cell, otherw ise it will be in overtype mode. For more information see Section 4.4.2 Cell Edi ting and Navigation of the manual/help. 2 An option to nominate a starting page number for the creation of the rep ort for each RAPT run has been added. The default is 1, which will work the same as previously. For more information see section 7.3.1.3 Creating A Report of th e manual/help. 3 y l e t In horizontal steps, the dialog for the rebate option has been completel redesigned with a graphical layout to show the options more clearly. The manua has not been updated for this yet. In the next release all step dialogs will b changed to the same graphical format and the manual will be modified to reflec the changes.

4 Where a second vertical scale is required on the graphics, the right han d scale has previously not been rounded to logical numbers. This is now fixed so the right scale is more easily readable. 5 Several instances where modifying concrete shapes or prestress tendon da ta have caused illogical reprofiling of tendons have been fixed, especially wher e sloping straight lengths are used at the ends of a span. Generation of the ten don profile and prestress actions has also been improved in some cases. 6 Fixed problem with full vertical step with negative taper length (taper before step). 7 8 Fixed problems with updating of graphics in some cases. Improved the reinforcement detailing logic in some cases.

9 Modified output tree functionality so that only the folder and sub-folde rs containing selected nodes are opened when traversing with Ctrl+PageUp/PageDow n. 10 Adding line reinforcement for column design has been improved where the

end of the line meets a sloping surface. 11 Slenderness calculations for BS8110 have been fixed.

12 Plus many small changes and improvements to functionality and output for matting. 13 We have noticed that using the Windows XP Style for Display Properties-> Appearance->Windows and Buttons results in a background colour for menus which i s White. This can be modified by selecting the Display Properties->Appearance->W indows->Advanced Button; under Item: select "Menu" and then select another pale colour which suits the remainder of your colour scheme other than white. This wi ll then allow you to see the selected items in the Tree Menu in both Input and O utput which use the menu background colour for shading. Changes in V6.1.1.8 - 15/2/2005 1 Fix problems with calculations for punching shear for BS8110 where trans verse punching shear data defined. 2 3 4 Add Copy/Paste Icons to toolbar for prestress tendons control grid. Add delete All icon to toolbar for User Defined reinforcement.

Add graphics interaction for selecting tendons in prestress graphics. If the user clicks within 5 pixels vertically of a tendon, RAPT will select that t endons data as the current tendon. If more than one tendon is within the 5 pixel range of the clicked point, RAPT will select the next tendon in the control gri d that is within the clicking distance. 5 Add data check for transverse beams to ensure that the transverse beam d epth is not equal to the slab depth either side of the transverse beam. 6 Report the actual low point profile point and value for skewed parabola profiles on the prestress tendon input graphics with the mid profile location sh own also but without a value. Changes in V6.1.1.6 1 Fix problems with creation of tendon profiles in last span. 2 Fix problem with extending distributed loads when right end cantilever a dded and right end length = 0. 3 Fix intermittent problems with sizing of I dialog in output (when prestr ess screen in input had been viewed). 4 Fix cursor line in reinforcement graphics for 2way systems.

5 Add "length between cursor points" in output graphics. If the designer h as selected a cursor location and uses Ctrl + Left Click to select another point , the location of the new point and the distance from the previous point are dis played on the status bar at the left side. 6 In column reinforcement input, once a group of reinforcing bars has been selected and displayed as discussed in V6.1.1.4 - 6 below, a group of the displ ayed bars can be selected using standard Windows selection methods with the mous e and/or keyboard. Once selected, if all of the selected items are of the same r einforcement type, pressing the right mouse button will display a right click me nu which allows the common reinforcement information in the selected items to be modified using a single dialog. All will be modified to the same set of data. T

he reinforcement type of the selected group cannot be changed. Changes in V6.1.1.5 1 Fixed problem with automatic adjustment of prestress locations with chan ge in right cantilever length. 2 Added error check to not allow the length of a cantilever to be less tha n the length of a transverse beam or drop panel in the cantilever. A red error c ell will block the data change. The drop panel or transverse beam dimensions mus t be modified first. 3 Fixed a problem with modifying prestress tendon sizes when the tendon ty pe is changed and the number of tendon sizes available for the new tendon type i s less than the number of the current tendon size. 4 Improved the column design output information, especially for Range of B ar Size checks. Changes in V6.1.1.4 1 Grossly overloaded members with extreme ductility problems now produce r esults in RAPT V6 so that the designer can see where the problems lie. A problem with this routine has been fixed in the latest version for severe cases of over loading. 2 RAPT allows the designer to nominate the location of the critical design section near the face of the support in the input as a fraction of the half sup port length. Unrealistic values input here were causing design errors. This has been trapped both in the input data checking and at the design stage. 3 A problem with the creep losses calculation for members with large steps has been fixed.

4 Tendon profile errors that occur in the output calculations now produce error messages that relate back to the input data. Previously they were treated like any other output error and were not related to the input data. 5 Column design for codes other than AS3600 had a problem with the selecti on of the code to design for. This has been fixed. 6 Column design reinforcement interface has been improved to allow the des igner to more easily distinguish between different sets of reinforcement. If mul tiple bar types are selected using the mouse or toolbar icon or if two bars on t op of each other are selected by selecting one bar with the mouse, a table listi ng the bar types selected is opened on the top right of the screen and these bar s will be shown as a dark blue colour on the graphics. The designer can select to view the bars for each type selected using a single m ouse click in this table of the up/down arrow keys. The selected bar types in th e table will show as a cyan (light blue) color compared to the dark blue of the other types in the table. The selected bar types can be deleted from the shape u sing the delete key in this table. Double clicking on one bar type in the table will open the modify reinforcement dialog for this bar type. --NOTE-- The reinforcement dialog has a name at the top. When adding a new reinf orcement it will be "Add Reinforcement.........". When modifying an existing rei nforcement type it will be "Modify Reinforcement........." Changes in V6.1.1.3 - 10/12/2004 1 Released for CD copying. 2 Default reinforcement sizes modified for middle strip of two way beam sy

stems to select slab type reinforcement. Warning added for these cases regarding left over moment in column strip. 3 Fixed some interface problems in column program.

Changes in V6.1.1.2 1 Add copy capability from output text results. User can select individual or groups of tables of data and copy them to the clipboard and paste to other p rograms such as Excel, Word, Notepad in same format. 2 Fix problem with zero depth elements.

Changes in V6.1.1.1 1 Added data field in General Data for frame input to allow the designer t o control the way RAPT calculates the Top and Bottom Reference surfaces for rein forcement design zones and prestress tendon cover. 2 Added more functionality to column design program and finished output re port options for output of defined data for column design. 3 . Improved warnings for reinforcement zones and user defined reinforcement

Changes in V6.1.1.0 1 New version of column design allowing reinforcement patterns to be inser ted as individual bars. Individual bars can be drag/dropped to new positions. Te xt output added. Improvements in other areas. 2 Improved data checking for prestressing. Checks on tendon cover now only carried out after tendon profile calculation succeeds. Fixed problems with prof ile generation for some complex profile shapes. 3 Fixed problems with designed mesh inserted back into input.

Changes in V6.1.0.9 - 20/11/2004 1 Added new rules for low ductility reinforcement for AS3600 Amendment 2. Modified rules for crack control for this amendment were added in earlier releas es. 2 3 Added Column Design as a Beta release. Fixed some problems with checking for steel cover.

4 Fixed intermittent problems where a run would crash after modifications to prestress and then when the same modified file is reloaded, runs perfectly. Changes in V6.1.0.7 1. Fixed problems with warning/error message in reinforcement input. Changes in V6.1.0.6 - 21/10/2004 1. Fixed problems with prestress input screen. 2. Fixed printing problem that occurred on some users.

Changes in V6.1.0.5 1. Added data checks for reinforcing zones - produces an Input Error if the zone is outside the concrete surfaces or an Input Warning if the zone is less t han 20mm inside the closest concrete surface. These checks are done at each end of each zone and at all change in section locations. Double clicking on the warn ing message will take data focus to the zone that is causing the problem. 2. Added data checks for reinforcing bars - produces an Input Warning if th e bar is less than 20mm inside the closest concrete surface. These checks are do ne at each end of each bar and at all change in section locations. If a reinforc ing bar is outside the concrete surface it will be ignored for all calculations. Double clicking on the warning message will take data focus to the bar that is causing the problem. 3. Added data checks for prestress tendon profiles - produces an Input Warn ing if the tendon duct surface is less than the nominated default surface cover inside either concrete surface. These checks are done at all transition points a nd peak points in each tendon profile and at all change in section locations. If a tendon is outside the concrete surface it will be treated as unbonded at thos e points. Double clicking on the warning message will take data focus to the spa n of the tendon that is causing the problem. 4. Fixed problems with steps which are a combination of a step and a taper on the same surface. 5. Fixed problems with Undo.

6. Fixed problems with deflection and transfer load combinations allowing m oment envelopes to be included in the combinations. 7. Fixed problem with flexural reinforcement warning when tension reinforce ment has to be added to solve a compression problem because the reinforcement ce ntroid is too close to the compression face. 8. Fixed problem with automatic resetting of tendon end locations when end span length adjusted. 9. Manual in PDF format available for download from website.

Changes in V6.1.0.4 1 Fix for automatic update of tendon data for change in span lengths 2 General fixes for minor interface problems Changes in V6.1.0.3 1. Modified prestress forces calculation for creep losses. The creep losses is now calculated based on the compressive stress in the concrete at the level of the tendon under the transfer prestress condition with the permanent loading applied. This will often lead to increased prestress forces but may in some extr eme cases lead to reduced prestress forces. 2. 3. 4. 5. 6. Fixed and modified the line thickness option in output to printers Fixed problems with UnDo for added load cases. Fixed some minor problems with concrete shape graphics. Fixed problem with default jacking force for pretensioned members. Fixed some output formatting problems.

Changes in V6.1.0.2 - 2/8/2004 1. Reinforced Member Crack Control: Ast.min calculation has been removed fr om RAPT. The AS3600 committee has voted to remove it from the code and an amendm ent 2 to AS3600 will be released shortly to this effect. If, for some reason, a designer needs to allow for this reinforcement in a design, this will have to be done manually by the designer. 2. nter. 3. 4. 5. Allow the definition of separate font sizes for output to screen and pri Fixed printing formatting problems. Fixed Windows Exception Errors for Undo in some extreme cases. Updated help screens.